Which is the current update from DelPhi? I did not have a try yet, but have a curiosity to know it. I will not get the best explanation from anywhere else other than here. Please let me know how beneficial it is for me.

Which is that the current update from Delphi? I didn't have an attempt, however, have a curiosity to understand it. I'll not get the most effective rationalization from anyplace else aside from here. Please let Pine Tree State skills helpful it's on behalf of me.

I want to simulate air movements in a room.
I have a converge problem. Also I got this error "BiCGStab did not converge !"
in the residual page, Tdr in k-epsilon diverge. Do you know how to solve the problem?
the surface mesh quality is higher than 0.5 and volume mesh quality is higher than 0.1.
Thanks in advance for your help

This is a warning to surface chemistry solver with no converge it needs to stabilize the flow of solve surface of this to not happened that error. Mostly the residuals don’t decrease in any case that would be at high level. Most of the users cannot understand the method in which they cannot concentrate to fix all the errors after taking this smaller help.

I am trying to model a tapering tube through which a cell moves along with the liquid. I want to study the fluid as well as the cell dynamics. I used Fluid-Structure interaction, time-dependent solver for the same. It is a fine, physics-controlled mesh. When I run the simulation, there is an error in a short while saying "Nonlinear solver did not converge." And it also says trying to find real sqrt of negative number.
When I try at finer or extremely fine mesh resolution, it says, requested mesh quality could not be achieved.
When the same simulation was carried out in an even tube, without tapering, these errors did not arise.
What could be causing the problem? How do I correct it?

I am simulating a surface reaction in FLUENT, finite-rate.
When the iteration stats, the following error shows up:

Warning: Surface chemistry solver did not converge for 203 cells/faces

I reduced the density under-relaxation. Also, I simulated the flow alone to stabilize the flow and after that started to solve surface chemistry, but the above error happened again.
Can anyone kindly help me to resolve this issue?